If it's worth saying, but not worth its own post, then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should start on Monday, and end on Sunday.
4. Unflag the two options "Notify me of new top level comments on this article" and "
[Excuse me. Not native english speaker]
First of all, Lesswrong is the site where I always put my lasts hope.
I'm having lots of troubles trying to find the truth about IQ test taken by different ethnic groups It seems there are lots of studies claiming differences in IQs. On the other side there is a lot of people saying the contrary (culturally biased tests,..)
What do we do as rationalists? I'm really confused. I have read tons of articles from both sides yet nothing is clear to me.
One more thing to consider is that IQ is caused partially genetically, and partially non-genetically, e.g. diseases or lack of nutrition decrease IQ. So if you e.g. examine people from a sick and starving population, of course they are likely to have below-average IQ. But that doesn't say anything about what IQ their descendants will have if the food and health problem gets fixed.
Intelligence is a polygenic trait, i.e. a trait influenced by multiple genes. There is an observed regression to the mean, that is although smart parents are likely to have smart ... (read more)